package org.example.device.protocol;

import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;

/**
 * CoAP设备协议实现
 * 用于CoAP协议的智能设备通信
 */
@Component
public class CoapDeviceProtocol implements DeviceProtocol {
    
    private static final String PROTOCOL_TYPE = "COAP";
    private boolean initialized = false;
    
    @Override
    public ProtocolResult sendCommand(Long deviceId, String command, Map<String, Object> parameters) {
        if (!initialized) {
            return ProtocolResult.failure("CoAP协议未初始化", "PROTOCOL_NOT_INITIALIZED");
        }
        
        try {
            // 构建CoAP消息
            String uri = "coap://localhost:5683/devices/" + deviceId + "/control";
            Map<String, Object> message = new HashMap<>();
            message.put("command", command);
            message.put("parameters", parameters);
            message.put("timestamp", System.currentTimeMillis());
            
            // 这里应该发送CoAP消息到设备
            // 实际实现中需要集成CoAP客户端库
            System.out.println("发送CoAP命令到设备 " + deviceId + " URI: " + uri + " 消息: " + message);
            
            return ProtocolResult.success("CoAP命令发送成功", message);
        } catch (Exception e) {
            return ProtocolResult.failure("CoAP命令发送失败: " + e.getMessage(), "COAP_SEND_ERROR");
        }
    }
    
    @Override
    public ProtocolResult getDeviceStatus(Long deviceId) {
        if (!initialized) {
            return ProtocolResult.failure("CoAP协议未初始化", "PROTOCOL_NOT_INITIALIZED");
        }
        
        try {
            // 这里应该通过CoAP请求设备状态
            String uri = "coap://localhost:5683/devices/" + deviceId + "/status";
            System.out.println("获取设备 " + deviceId + " 的CoAP状态，URI: " + uri);
            
            // 模拟返回设备状态
            Map<String, Object> status = new HashMap<>();
            status.put("online", true);
            status.put("status", 1);
            status.put("timestamp", System.currentTimeMillis());
            
            return ProtocolResult.success("设备状态获取成功", status);
        } catch (Exception e) {
            return ProtocolResult.failure("获取设备状态失败: " + e.getMessage(), "COAP_STATUS_ERROR");
        }
    }
    
    @Override
    public ProtocolResult checkConnection(Long deviceId) {
        if (!initialized) {
            return ProtocolResult.failure("CoAP协议未初始化", "PROTOCOL_NOT_INITIALIZED");
        }
        
        try {
            // 检查CoAP连接状态
            String uri = "coap://localhost:5683/devices/" + deviceId + "/ping";
            System.out.println("检查设备 " + deviceId + " 的CoAP连接，URI: " + uri);
            
            // 模拟连接检查
            return ProtocolResult.success("设备连接正常");
        } catch (Exception e) {
            return ProtocolResult.failure("设备连接检查失败: " + e.getMessage(), "COAP_CONNECTION_ERROR");
        }
    }
    
    @Override
    public String getProtocolType() {
        return PROTOCOL_TYPE;
    }
    
    @Override
    public boolean initialize(Map<String, Object> config) {
        try {
            // 初始化CoAP连接
            String serverUrl = (String) config.get("serverUrl");
            Integer timeout = (Integer) config.get("timeout");
            
            System.out.println("初始化CoAP连接: " + serverUrl + ", 超时: " + timeout + "ms");
            // 实际实现中需要创建CoAP客户端连接
            
            this.initialized = true;
            return true;
        } catch (Exception e) {
            System.err.println("CoAP初始化失败: " + e.getMessage());
            return false;
        }
    }
    
    @Override
    public void shutdown() {
        try {
            // 关闭CoAP连接
            System.out.println("关闭CoAP连接");
            // 实际实现中需要断开CoAP客户端连接
            this.initialized = false;
        } catch (Exception e) {
            System.err.println("CoAP关闭失败: " + e.getMessage());
        }
    }
}
